Karst aquifer draining during dry periods

Fiorillo, Francesco; Revellino, Paola; Ventafridda, Gerardo

doi:10.4311/2011jcks0207

Cited by 37 publications

(19 citation statements)

References 18 publications

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“…The annual rainfall of 1948-49 was 2.65 standard deviations below the mean, and presents an extreme meteorological drought in southern Italy (Fiorillo & Guadagno 2010, 2012. During the following year 1949-50, the annual rainfall was almost as the mean value, but Caposele Spring still had a discharge one standard deviation below the mean, indicating that it maintains the memory effect of the antecedent drought year.…”

Section: Climate and Hydrological Featuresmentioning

confidence: 93%

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Main Hydrological Features and Recharge Analysis of the Caposele Spring Catchment, Southern Italy

Fiorillo

Pagnozzi

Stevanović

et al. 2019

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UDC 556.33(450.7) Francesco Fiorillo, Libera Esposito, Mauro Pagnozzi, Zoran Stevanović & Gerardo Ventafridda: Main hydrological features and recharge analysis of the Caposele Spring catchment, southern ItalyThe Caposele spring supplies with water the Puglia region (southern Italy) since the beginning of the twentieth century by a wide and long (about 400 km) gravity-aqueduct system. Systematic spring discharge measurements exist since 1920. The annual mean discharge of spring is about 4 m 3 /sec, the spring catchment of the of Mt. Cervialto karst massif is estimated on more than 100 km 2 . The spring regime is characterised by absence of abrupt peaks in the hydrographs; the flood period occurs in spring-summer time, and the minimum during the autumn-winter time. Thus, the regime is almost opposite that of rainfall which allows a convenient management of the source. The historical data have shown that spring discharge depends also on the hydrological conditions of the previous year because the ''memory effect" of aquifer. The recharge processes have been evaluated using a daily scale recharge model, calibrated on long term annual scale. The results allow to estimate the inertial behaviour of the aquifer, by the difference of recharged and discharged water volume during a hydrological year: after a wet year, an amount of water volume is retained into the aquifer and constitutes the surplus volume stored; after a dry year, the aquifer discharges a water volume higher than the recharged volume (a deficit in storage). Ventafridda: Glavne hidrološke značilnosti in analiza napajanja zaledja izvira Caposele, južna ItalijaIzvir Caposele je od začetka 20. stoletja glavni vodni vir Apulije (južna Italija). Voda je od izvira do mest gravitacijsko speljana po približno 400 km dolgem akvaduktu. Sistematične meritve pretoka potekajo od leta 1920, povprečni pretok izvira je 4 m 3 /s, območje napajanja je kraški masiv gore Cervialto s površino preko 100 km 2 . Značilnosti izvira so odsotnost izrazitih vrhov v pretočnem hidrogramu, visok pretok v pomladansko-poletnem času in nizek pretok v jesensko-zimskem obdobju. Režim pretoka izvira je skoraj obraten od padavin, kar omogoča preprosto upravljanje vodnega vira. Zgodovinski podatki kažejo, da je pretok odvisen od hidroloških razmer v predhodnem letu, kar je posledica velikega »spominskega učinka« vodonosnika. Napajanje sistema smo ocenili na podlagi dnevnega modela napajanja, umerjenega na dolgoročno letno obdobje. Z razliko med napajanjem in odtokom v hidrološkem letu, smo ocenili inercijsko obnašanja vodonosnika. Izkaže se, da se v letu z veliko padavinami presežek napajanja skladišči v vodonosniku, v suhem letu pa je volumen odtoka večji od volumna odtoka.

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Section: Climate and Hydrological Featuresmentioning

confidence: 93%

“…The long-term spring discharge measurements and the relation to climate variable have been analysed by Fiorillo and Guadagno (2012), and the hydraulic aquifer behaviour during droughts has been described by Fiorillo (2009) and Fiorillo et al (2012).…”

Section: Methodsmentioning

confidence: 99%

Main Hydrological Features and Recharge Analysis of the Caposele Spring Catchment, Southern Italy

Fiorillo

Pagnozzi

Stevanović

et al. 2019

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“…There is a very close correlation between the recession coeffi cient and especially the effective porosity of the aquifer and the location of the water table. As a result, during the discharge period, variations in these two parameters will cause changes in the recession curve (Fiorillo, 2011;Fiorillo et al, 2012). The recession coeffi cient of the studied spring is related to the geometry and density of the fracture system affecting the region with the calculated recession coeffi cient representing recharge of the spring through narrow fi ssures, fractures and pores (Çetindağ and Öztekin, 2001;Çetindağ, 2002;Kovack et al, 2005;Ebrahimi et al, 2007) .…”

Section: Calculation and Interpretation Of Recession Coeffi Cient Andmentioning

confidence: 99%

The Hydrogeological Investigation of Plajköy Spring (Elaziğ)

Okan¹,

Güven²,

Çetindağ³

2018

Bulletin of the Mineral Research and Exploration

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Plajköy spring discharges at the close locations to the SE shore of Lake Hazar. Lake Hazar is a tectonic Lake in Elazığ city. Plajköy spring is a fault spring that is mainly recharging from the volcanites, dikes and blocky volcanosedimentary units of Middle Eocene Maden Complex. These units have gained secondary permeability and porosity related with the active tectonics that is effective in the studied area. The present catchment system of the spring could not collect the springs and leaks discharging from different points around the system. The discharge of the catchment is measured by specifi c volume method while the other springs' and leaks' is measured by using triangular weir. Before the discharge measurement of the leaks and the springs, they have been directed to a channel. The discharge of the present catchment system and the leaks have measured twice in a month during one year period beginning from October of 2012 to November of 2013. The discharge coeffi cient of the spring is calculated 1.33*10 -3 day -1 . Discharge coeffi cient of the spring depends on the geometry and intensity of the active fracture systems in the region. Calculated discharge coeffi cient indicates that the spring discharge is related with the narrow fi ssures, fractures and pores. The total volume of discharged groundwater in the real regime of the Plajköy spring is calculated as 52* 10 3 m 3 during the period from 31 st of March, 2013 to the 13 rd of October, 2013 by Maillet formula. The spring water is Ca-Mg-HCO 3 type water related with the chemical analyses. The chemical and microbiological analyses of the spring water are correlated with the drinking water standarts of Turkey TS 266 (TSE, 2005) and World Health Organization (2004), and it is seen that the spring water is suitable for drinking. The Plajköy spring will be used more effi ciently without exposed to pollution by the new catchment plan and protection zone map that are consequently proposed in the present study.

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“…In this specific case study, two karst aquifers, with embedded non-karstic strata, are presented. The only way to understand the interconnection between the two aquifers is the interpretation of a dye tracer study and hydrograph analysis of discharge from the deep aquifer (Groves 2007;Fiorillo et al 2012).…”

Section: Karst Hydrogeologymentioning

confidence: 99%

Recent advances in karst research: from theory to fieldwork and applications

Parise

Gabrovšek

Kaufmann

et al. 2018

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Karst landscapes and karst aquifers, which are composed of a variety of soluble rocks such as salt, gypsum, anhydrite, limestone, dolomite and quartzite, are fascinating areas of study. As karst rocks are abundant on the Earth's surface, the fast evolution of karst landscapes and the rapid flow of water through karst aquifers present challenges from a number of different perspectives. This collection of 25 papers deals with different aspects of these challenges, including karst geology, geomorphology and speleogenesis, karst hydrogeology, karst modelling, and karst hazards and management. Together these papers provide a state-of-the-art review of the current challenges and solutions in describing karst from a scientific perspective.

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Karst aquifer draining during dry periods

Cited by 37 publications

References 18 publications

Main Hydrological Features and Recharge Analysis of the Caposele Spring Catchment, Southern Italy

Main Hydrological Features and Recharge Analysis of the Caposele Spring Catchment, Southern Italy

The Hydrogeological Investigation of Plajköy Spring (Elaziğ)

Recent advances in karst research: from theory to fieldwork and applications

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